TUE-32-INV-001 G.M. International s.r.l.
GM International


32-pos Term. Unit for Foxboro DI card FBM217

This Termination Unit with Enclosure (TUE) provides galvanic isolation through opto-couplers between the I/O Card of the system and the field terminals for Digital Input applications. It supports free-voltage contacts as well as NAMUR proximity sensors. The status (open or closed) of each channel is also indicated through individual LEDs. Redundant power supply with voltage monitoring is supported.


  • Foxboro DI Card board interface
  • 32 positions Termination Unit for up to 32 channels
  • Field terminals for free-voltage contacts and NAMUR proximity sensors
  • Field/System isolation
  • Lower cables installation and maintenance costs
  • Power supplies redundancy
  • Power supplies voltage monitoring
  • Active current limitation against sensor vs. board supply accidental short
  • Single DIN Rail mounting


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Technical Data


Maximum number of channels 32


Type 24 Vdc nom (20 to 30 Vdc), reverse polarity protected, redundant power supply, with OR diodes to mix supply voltages.
Current consumption (total supply) 0.42 A typical, with all input channels shorted.
Connection by screw with terminations up to 2.5 mm².
Protection fuse 2 A time lag.
Voltage monitor contact closed if both power supplies are connected and active.

Supply fault detection

Type The on-board diagnostics monitors both power supplies integrity. Any malfunction is reported by deactivating a solid-state relay and activating the corresponding red LED. Alarm is issued if power supply 1 or 2 < 10 Vdc. Alarm is removed if power supply 1 and 2 ≥ 20 Vdc.
Connection terminations up to 2.5 mm².
Output rating 100 mA 35 V (≤ 0.5 V voltage drop).

I/O Card Interface

Connection 1 x 37-pin D-sub male connector (require female mating connector).
Cable system cable Type 4.

Field Interface

Connection by screw with terminations up to 2.5 mm².
Input equivalent source 8 V with 1 kΩ typical (8 V no load, 8 mA short).
Input switching current levels ON ≥ 2.1 mA, OFF ≤ 1.2 mA.


Type System/Field (including TUE power supply) 1.5 kV.

Environmental conditions

Operating temperature –20 to +60 °C (Vsupply ≤ 25.2 Vdc), –20 to +50 °C (Vsupply > 25.2 Vdc).
Max altitude 2000 m a.s.l.
Storage temperature temperature limits –45 to +80 °C.


Type Hardware included for mounting on single DIN-rail 35 mm.
Weight about 420 g.
Location installation in Safe Area.
Dimensions Width 217 mm, Depth 125 mm, Height 68 mm.

Data Sheet

Datasheet of TUE-32-INV-001 ( EN | ES | CN | FR | IT | DE | PT | JA )
Schneider Foxboro TB Summary ( EN | FR | JA | CN | PT | IT | ES | DE )

Instruction Manual

Instruction Manual Foxboro EcoStruxure (Evo) for TUE series ( EN )

Declarations of Conformity

EU Declaration Termination Boards TB, TBE, TUE ( EN )